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Sequences and Series question

2020 · 6 Sep · Shift 2 · Q31
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Sequences and Series question

2020 · 6 Sep · Shift 2 · Q31

JEE MainMathematicsSequences and SeriesMCQ+4 / −1
The common difference of the A.P. b1, b2, … , bm is 2 more than the common difference of A.P. a1, a2, …, an. If a40 = –159, a100 = –399 and b100 = a70, then b1 is equal to :
  1. A
    127
  2. B
    81
  3. C
    –127
  4. D
    -81
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